Pack your bags and take a trip to Mexico in these radio mysteries. First, Burt Lancaster plots a double cross in "The Big Shot" from Suspense (originally aired on CBS on September 9, 1948). Philip Marlowe is hired to find out what a woman is up to in "The Mexican Boat Ride" (originally aired on CBS on July 30, 1949), and the cops of Dragnet chase a pair of fugitives in "The Big Border" (originally aired on NBC on March 20, 1952). Finally, Dana Andrews tries to thwart the plans of Soviet saboteurs trying to sneak into the US in "The Red Gate" from I Was a Communist for the FBI.